Megastigmanes and Flavonoids from Seeds of Hippophae rhamnoides
摘要
Phytochemical investigation of the seeds from Hippophae rhamnoides L. led to the isolation of a new megastigmane, named (6S,9R)-9-hydroxy-4,7-megastigmadien-3-one-9-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside (1), together with its spatial heterogeneity which is a known megastigmane (2). Compounds 3–13 are flavonoid glycosides, 9 compounds (2, 5–12) of which were isolated from the H. rhamnoides for the first time. Their structures were proposed through HR-ESI-MS, 1H, and 13C NMR data interpretation.